{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x98e392fd589ebf5f3ec208b7d58c17e30f2bb0b64d8fcb528ea9edae17d087b4",
    "signature": "0x8fa0c773200d5a26b0ebfca88e95e59e320d3c5b183a80ffa317b46464f205a94627e3c3fbea20df394e9a0ce4381cea173c900645cc6dac91a25a24218afda01c",
    "signer": "0xD45c94f037Bd386dB720038e64a1C407400650A1",
    "userId": "868839581"
  }
}